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Use PreferAvoidPods annotation to avoid pods being scheduled to specific node.

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1. define PreferAvoidPods annotation
2. add PreferAvoidPodsPriority
3. validate AvoidPods in node annotations
This commit is contained in:
jiangyaoguo
2016-02-25 17:30:31 +08:00
parent eecbfb1a28
commit 4e91166bc6
14 changed files with 2995 additions and 201 deletions
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45
pkg/api/validation/validation.go
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@@ -1724,6 +1724,41 @@ func ValidateNodeSelector(nodeSelector *api.NodeSelector, fldPath *field.Path) f
return allErrs
}
// ValidateAvoidPodsInNodeAnnotations tests that the serialized AvoidPods in Node.Annotations has valid data
func ValidateAvoidPodsInNodeAnnotations(annotations map[string]string, fldPath *field.Path) field.ErrorList {
allErrs := field.ErrorList{}
avoids, err := api.GetAvoidPodsFromNodeAnnotations(annotations)
if err != nil {
allErrs = append(allErrs, field.Invalid(fldPath.Child("AvoidPods"), api.PreferAvoidPodsAnnotationKey, err.Error()))
return allErrs
}
if len(avoids.PreferAvoidPods) != 0 {
for i, pa := range avoids.PreferAvoidPods {
idxPath := fldPath.Child(api.PreferAvoidPodsAnnotationKey).Index(i)
allErrs = append(allErrs, validatePreferAvoidPodsEntry(pa, idxPath)...)
}
}
return allErrs
}
// validatePreferAvoidPodsEntry tests if given PreferAvoidPodsEntry has valid data.
func validatePreferAvoidPodsEntry(avoidPodEntry api.PreferAvoidPodsEntry, fldPath *field.Path) field.ErrorList {
allErrors := field.ErrorList{}
if avoidPodEntry.PodSignature.PodController == nil {
allErrors = append(allErrors, field.Required(fldPath.Child("PodSignature"), ""))
} else {
if *(avoidPodEntry.PodSignature.PodController.Controller) != true {
allErrors = append(allErrors,
field.Invalid(fldPath.Child("PodSignature").Child("PodController").Child("Controller"),
*(avoidPodEntry.PodSignature.PodController.Controller), "must point to a controller"))
}
}
return allErrors
}
// ValidatePreferredSchedulingTerms tests that the specified SoftNodeAffinity fields has valid data
func ValidatePreferredSchedulingTerms(terms []api.PreferredSchedulingTerm, fldPath *field.Path) field.ErrorList {
allErrs := field.ErrorList{}
@@ -2359,10 +2394,14 @@ func ValidateTaintsInNodeAnnotations(annotations map[string]string, fldPath *fie
}
func ValidateNodeSpecificAnnotations(annotations map[string]string, fldPath *field.Path) field.ErrorList {
if annotations[api.TaintsAnnotationKey] != "" {
return ValidateTaintsInNodeAnnotations(annotations, fldPath)
allErrs := field.ErrorList{}
if annotations[api.PreferAvoidPodsAnnotationKey] != "" {
allErrs = append(allErrs, ValidateAvoidPodsInNodeAnnotations(annotations, fldPath)...)
}
return field.ErrorList{}
if annotations[api.TaintsAnnotationKey] != "" {
allErrs = append(allErrs, ValidateTaintsInNodeAnnotations(annotations, fldPath)...)
}
return allErrs
}
// ValidateNode tests if required fields in the node are set.